https://ssebv.github.io/writing/ Notes on running ERP and financial systems in production. en https://ssebv.github.io/writing/erp-migration.html https://ssebv.github.io/writing/erp-migration.html 28 Jul 2026 12:00:00 GMT Migrating five major versions forward across four companies and three countries. The failures that raised errors were fixed in days; the ones that changed behaviour without raising anything lasted weeks. https://ssebv.github.io/writing/health-check.html https://ssebv.github.io/writing/health-check.html 28 Jul 2026 12:00:00 GMT Building a health check that reconciles inventory against the general ledger every six hours, what it found that no report showed, and why an alert nobody acts on is a defect rather than a nuisance.